Definition of platitudinal in English:
platitudinal
adjective
Pronunciation
platitudinal
/ˌplatɪˈtjuːdɪnl/ /ˌplatɪˈtʃuːdɪnl/ Origin
Late 19th century; earliest use found in Olive Logan (1839–1909). From platitude + -in- + -al, after e.g. latitudinal.